6429845538 has 24 divisors (see below), whose sum is σ = 13959270000. Its totient is φ = 2138983704.

The previous prime is 6429845509. The next prime is 6429845549. The reversal of 6429845538 is 8355489246.

6429845538 is a `hidden beast` number, since 6 + 4 + 2 + 9 + 84 + 553 + 8 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 348948 + ... + 366911.

It is an arithmetic number, because the mean of its divisors is an integer number (581636250).

Almost surely, 2^6429845538 is an apocalyptic number.

6429845538 is an abundant number, since it is smaller than the sum of its proper divisors (7529424462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6429845538 is a wasteful number, since it uses less digits than its factorization.

6429845538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716366 (or 716363 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 54.

The square root of 6429845538 is about 80186.3176483370. The cubic root of 6429845538 is about 1859.5171153680.

The spelling of 6429845538 in words is "six billion, four hundred twenty-nine million, eight hundred forty-five thousand, five hundred thirty-eight".